181
FZUS51 KBOX 271405
CWFBOX
COASTAL WATERS FORECAST FOR MASSACHUSETTS AND RHODE ISLAND
NATIONAL WEATHER SERVICE BOSTON/NORTON MA
1004 AM EDT MON APR 27 2026
COASTAL WATERS FROM THE MERRIMACK RIVER MA TO WATCH HILL RI OUT
TO 60 NM
ANZ200-280300-
1004 AM EDT MON APR 27 2026
SYNOPSIS FOR MASSACHUSETTS AND RHODE ISLAND COASTAL WATERS
LOW PRES NEAR WELL SOUTHEAST OF 40N/70W WILL CONTINUE TO DRIFT
SOUTHEAST TODAY, WITH HIGH PRES BUILDING IN FROM THE NORTH. HIGH
PRES THEN REMAINS CONTROL OF OUR WATERS EARLY THIS WEEK. LOW PRES
THEN APPROACHES FROM THE WEST WED AND INTENSIFIES OFF THE COAST THU
EVENTUALLY LIFTING INTO MAINE FRI.
ANZ250-280300-
COASTAL WATERS EAST OF IPSWICH BAY AND THE STELLWAGEN BANK
NATIONAL MARINE SANCTUARY-
1004 AM EDT MON APR 27 2026
...SMALL CRAFT ADVISORY IN EFFECT FROM LATE TONIGHT THROUGH LATE
TUESDAY NIGHT...
THIS AFTERNOON
NE WINDS 5 TO 10 KT. SEAS 2 TO 3 FT. WAVE
DETAIL: SE 2 FT AT 7 SECONDS AND N 1 FOOT AT 2 SECONDS.
TONIGHT
E WINDS 5 TO 10 KT. SEAS 2 TO 4 FT. WAVE DETAIL: E
4 FT AT 12 SECONDS AND SE 4 FT AT 13 SECONDS. PATCHY FOG AFTER
MIDNIGHT WITH VSBY 1 TO 3 NM.
TUE
NE WINDS 10 TO 15 KT. GUSTS UP TO 20 KT IN THE AFTERNOON.
SEAS 4 TO 6 FT. WAVE DETAIL: E 5 FT AT 8 SECONDS AND SE 5 FT AT
10 SECONDS. PATCHY FOG IN THE MORNING WITH VSBY 1 NM OR LESS.
TUE NIGHT
NE WINDS 10 TO 15 KT WITH GUSTS UP TO 20 KT. SEAS
5 TO 7 FT. WAVE DETAIL: E 6 FT AT 10 SECONDS AND N 2 FT AT
4 SECONDS.
WED
NE WINDS AROUND 10 KT. SEAS 5 TO 7 FT. WAVE DETAIL: E 7 FT
AT 10 SECONDS AND N 2 FT AT 4 SECONDS. A CHANCE OF SHOWERS IN THE
AFTERNOON.
WED NIGHT
E WINDS 10 TO 15 KT. GUSTS UP TO 20 KT AFTER
MIDNIGHT. SEAS 4 TO 6 FT. WAVE DETAIL: E 6 FT AT 9 SECONDS AND SE
2 FT AT 3 SECONDS. A CHANCE OF SHOWERS.
THU AND THU NIGHT
SE WINDS 15 TO 20 KT, BECOMING NE. SEAS 4 TO
6 FT. SHOWERS.
FRI
W WINDS 15 TO 20 KT WITH GUSTS UP TO 25 KT. SEAS 4 TO
6 FT. A CHANCE OF SHOWERS.
FRI NIGHT
W WINDS 15 TO 20 KT. SEAS 4 TO 5 FT.
SEAS ARE REPORTED AS SIGNIFICANT WAVE HEIGHT, WHICH IS THE
AVERAGE OF THE HIGHEST THIRD OF THE WAVES. INDIVIDUAL WAVE
HEIGHTS MAY BE MORE THAN TWICE THE SIGNIFICANT WAVE HEIGHT.
ANZ251-280300-
MASSACHUSETTS BAY AND IPSWICH BAY-
1004 AM EDT MON APR 27 2026
THIS AFTERNOON
NE WINDS 5 TO 10 KT. SEAS 1 FOOT OR LESS, THEN
AROUND 2 FT. WAVE DETAIL: NW 1 FOOT AT 2 SECONDS AND NE 1 FOOT AT
2 SECONDS, BECOMING NE 1 FOOT AT 3 SECONDS AND SE 1 FOOT AT
7 SECONDS.
TONIGHT
E WINDS 5 TO 10 KT. SEAS 2 TO 3 FT. WAVE DETAIL: E
3 FT AT 11 SECONDS AND NE 2 FT AT 4 SECONDS.
TUE
NE WINDS 5 TO 10 KT. SEAS 2 TO 4 FT. WAVE DETAIL: E 4 FT
AT 8 SECONDS AND S 4 FT AT 11 SECONDS.
TUE NIGHT
NE WINDS AROUND 10 KT. SEAS 4 TO 6 FT. WAVE DETAIL:
E 5 FT AT 8 SECONDS AND N 1 FOOT AT 3 SECONDS.
WED
NE WINDS AROUND 10 KT. SEAS 4 TO 6 FT. WAVE DETAIL: E 6 FT
AT 10 SECONDS AND NE 2 FT AT 7 SECONDS.
WED NIGHT
E WINDS 10 TO 15 KT. SEAS 3 TO 5 FT. WAVE DETAIL: E
5 FT AT 9 SECONDS AND SE 2 FT AT 5 SECONDS. A CHANCE OF SHOWERS
IN THE EVENING, THEN SHOWERS LIKELY AFTER MIDNIGHT.
THU AND THU NIGHT
E WINDS AROUND 15 KT, BECOMING N. SEAS 3 TO
5 FT. SHOWERS.
FRI
W WINDS 15 TO 20 KT. SEAS 3 TO 4 FT. A CHANCE OF SHOWERS.
FRI NIGHT
W WINDS 15 TO 20 KT. SEAS 3 TO 4 FT.
SEAS ARE REPORTED AS SIGNIFICANT WAVE HEIGHT, WHICH IS THE
AVERAGE OF THE HIGHEST THIRD OF THE WAVES. INDIVIDUAL WAVE
HEIGHTS MAY BE MORE THAN TWICE THE SIGNIFICANT WAVE HEIGHT.
ANZ231-280300-
CAPE COD BAY-
1004 AM EDT MON APR 27 2026
THIS AFTERNOON
NE WINDS 5 TO 10 KT. SEAS AROUND 2 FT. WAVE
DETAIL: N 1 FOOT AT 2 SECONDS AND E 1 FOOT AT 6 SECONDS.
TONIGHT
NE WINDS 5 TO 10 KT. GUSTS UP TO 20 KT AFTER MIDNIGHT.
SEAS AROUND 2 FT. WAVE DETAIL: SE 2 FT AT 7 SECONDS AND NE 1 FOOT
AT 3 SECONDS.
TUE
NE WINDS AROUND 10 KT. GUSTS UP TO 20 KT IN THE AFTERNOON.
SEAS 2 TO 3 FT. WAVE DETAIL: SE 3 FT AT 9 SECONDS AND E 2 FT AT
12 SECONDS.
TUE NIGHT
N WINDS AROUND 10 KT. GUSTS UP TO 20 KT IN THE
EVENING. SEAS 2 TO 3 FT. WAVE DETAIL: N 2 FT AT 3 SECONDS AND E
2 FT AT 11 SECONDS.
WED
NE WINDS 5 TO 10 KT. SEAS 2 TO 3 FT. WAVE DETAIL: E 2 FT
AT 11 SECONDS AND N 1 FOOT AT 3 SECONDS.
WED NIGHT
E WINDS 5 TO 10 KT, BECOMING SE 10 TO 15 KT AFTER
MIDNIGHT. SEAS 2 TO 3 FT. WAVE DETAIL: NE 2 FT AT 10 SECONDS AND
NE 1 FOOT AT 2 SECONDS. A CHANCE OF SHOWERS.
THU AND THU NIGHT
SE WINDS 10 TO 15 KT, BECOMING W 15 TO
20 KT. SEAS 2 TO 3 FT. SHOWERS.
FRI AND FRI NIGHT
W WINDS 15 TO 20 KT. SEAS 2 TO 3 FT.
SEAS ARE REPORTED AS SIGNIFICANT WAVE HEIGHT, WHICH IS THE
AVERAGE OF THE HIGHEST THIRD OF THE WAVES. INDIVIDUAL WAVE
HEIGHTS MAY BE MORE THAN TWICE THE SIGNIFICANT WAVE HEIGHT.
ANZ254-280300-
COASTAL WATERS FROM PROVINCETOWN MA TO CHATHAM MA TO NANTUCKET MA
OUT 20 NM-
1004 AM EDT MON APR 27 2026
..SMALL CRAFT ADVISORY IN EFFECT THROUGH LATE TUESDAY NIGHT
THIS AFTERNOON
NE WINDS 10 TO 15 KT WITH GUSTS UP TO 25 KT.
SEAS 3 TO 5 FT. WAVE DETAIL: SE 3 FT AT 7 SECONDS AND N 2 FT AT
3 SECONDS.
TONIGHT
NE WINDS 10 TO 15 KT WITH GUSTS UP TO 25 KT. SEAS 4 TO
6 FT. WAVE DETAIL: E 5 FT AT 12 SECONDS AND SE 3 FT AT 8 SECONDS.
PATCHY FOG AFTER MIDNIGHT WITH VSBY 1 TO 3 NM.
TUE
NE WINDS 10 TO 15 KT, INCREASING TO 15 TO 20 KT IN THE
AFTERNOON. GUSTS UP TO 25 KT. SEAS 5 TO 7 FT. WAVE DETAIL: E 6 FT
AT 9 SECONDS AND N 2 FT AT 4 SECONDS. PATCHY FOG IN THE MORNING
WITH VSBY 1 NM OR LESS.
TUE NIGHT
NE WINDS 15 TO 20 KT, BECOMING N 10 TO 15 KT AFTER
MIDNIGHT. GUSTS UP TO 25 KT. SEAS 5 TO 8 FT. WAVE DETAIL: E 7 FT
AT 10 SECONDS AND N 3 FT AT 5 SECONDS.
WED
NE WINDS 10 TO 15 KT. SEAS 5 TO 7 FT. WAVE DETAIL: E 7 FT
AT 10 SECONDS AND NE 3 FT AT 5 SECONDS. PATCHY FOG IN THE MORNING
WITH VSBY 1 TO 3 NM.
WED NIGHT
E WINDS 10 TO 15 KT. GUSTS UP TO 20 KT AFTER
MIDNIGHT. SEAS 4 TO 6 FT. WAVE DETAIL: E 6 FT AT 9 SECONDS AND E
3 FT AT 5 SECONDS. A CHANCE OF SHOWERS AFTER MIDNIGHT.
THU AND THU NIGHT
SE WINDS AROUND 15 KT, BECOMING SW. SEAS
4 TO 6 FT. SHOWERS.
FRI AND FRI NIGHT
W WINDS 15 TO 20 KT. SEAS 4 TO 6 FT.
SEAS ARE REPORTED AS SIGNIFICANT WAVE HEIGHT, WHICH IS THE
AVERAGE OF THE HIGHEST THIRD OF THE WAVES. INDIVIDUAL WAVE
HEIGHTS MAY BE MORE THAN TWICE THE SIGNIFICANT WAVE HEIGHT.
ANZ255-280300-
COASTAL WATERS EXTENDING OUT TO 25 NM SOUTH OF MARTHAS VINEYARD
AND NANTUCKET-
1004 AM EDT MON APR 27 2026
..SMALL CRAFT ADVISORY IN EFFECT THROUGH LATE TUESDAY NIGHT
THIS AFTERNOON
NE WINDS 10 TO 15 KT WITH GUSTS UP TO 25 KT.
SEAS 3 TO 5 FT. WAVE DETAIL: E 4 FT AT 12 SECONDS AND SE 3 FT AT
7 SECONDS.
TONIGHT
NE WINDS 10 TO 15 KT WITH GUSTS UP TO 25 KT. SEAS 4 TO
6 FT. WAVE DETAIL: E 6 FT AT 9 SECONDS AND S 3 FT AT 9 SECONDS.
TUE
NE WINDS 10 TO 15 KT, INCREASING TO 15 TO 20 KT IN THE
AFTERNOON. GUSTS UP TO 25 KT. SEAS 4 TO 6 FT. WAVE DETAIL: E 6 FT
AT 9 SECONDS AND N 3 FT AT 4 SECONDS.
TUE NIGHT
NE WINDS 15 TO 20 KT, BECOMING N 10 TO 15 KT AFTER
MIDNIGHT. GUSTS UP TO 25 KT. SEAS 5 TO 7 FT. WAVE DETAIL: E 5 FT
AT 9 SECONDS AND N 4 FT AT 5 SECONDS.
WED
NE WINDS 10 TO 15 KT. GUSTS UP TO 20 KT IN THE MORNING.
SEAS 4 TO 6 FT. WAVE DETAIL: E 6 FT AT 10 SECONDS AND N 3 FT AT
4 SECONDS.
WED NIGHT
SE WINDS 10 TO 15 KT. SEAS 4 TO 6 FT. WAVE DETAIL: E
5 FT AT 9 SECONDS AND NE 2 FT AT 5 SECONDS. A CHANCE OF SHOWERS
AFTER MIDNIGHT.
THU
SE WINDS AROUND 15 KT WITH GUSTS UP TO 20 KT. SEAS 4 TO
6 FT. SHOWERS.
THU NIGHT
W WINDS 20 TO 25 KT. SEAS 4 TO 6 FT. A CHANCE OF
SHOWERS.
FRI AND FRI NIGHT
W WINDS 20 TO 25 KT. SEAS 4 TO 6 FT.
SEAS ARE REPORTED AS SIGNIFICANT WAVE HEIGHT, WHICH IS THE
AVERAGE OF THE HIGHEST THIRD OF THE WAVES. INDIVIDUAL WAVE
HEIGHTS MAY BE MORE THAN TWICE THE SIGNIFICANT WAVE HEIGHT.
ANZ256-280300-
COASTAL WATERS FROM MONTAUK NY TO MARTHAS VINEYARD EXTENDING OUT
TO 20 NM SOUTH OF BLOCK ISLAND-
1004 AM EDT MON APR 27 2026
..SMALL CRAFT ADVISORY IN EFFECT THROUGH LATE TUESDAY NIGHT
THIS AFTERNOON
NE WINDS 10 TO 15 KT WITH GUSTS UP TO 25 KT.
SEAS 4 TO 5 FT. WAVE DETAIL: SE 4 FT AT 7 SECONDS AND E 4 FT AT
12 SECONDS.
TONIGHT
NE WINDS AROUND 10 KT WITH GUSTS UP TO 20 KT. SEAS
4 TO 6 FT. WAVE DETAIL: SE 5 FT AT 9 SECONDS AND NE 2 FT AT
3 SECONDS.
TUE
NE WINDS 10 TO 15 KT WITH GUSTS UP TO 20 KT. SEAS 4 TO
6 FT. WAVE DETAIL: E 6 FT AT 9 SECONDS AND S 4 FT AT 7 SECONDS.
TUE NIGHT
NE WINDS 10 TO 15 KT WITH GUSTS UP TO 20 KT. SEAS
4 TO 6 FT. WAVE DETAIL: E 5 FT AT 10 SECONDS AND N 2 FT AT
4 SECONDS.
WED
NE WINDS 10 TO 15 KT, BECOMING E IN THE AFTERNOON. SEAS
4 TO 5 FT. WAVE DETAIL: NE 5 FT AT 9 SECONDS AND E 5 FT AT
10 SECONDS.
WED NIGHT
SE WINDS 10 TO 15 KT. SEAS 4 TO 5 FT. WAVE DETAIL: E
5 FT AT 10 SECONDS AND E 2 FT AT 5 SECONDS. SHOWERS LIKELY AFTER
MIDNIGHT.
THU
SE WINDS 10 TO 15 KT WITH GUSTS UP TO 20 KT. SEAS 4 TO
5 FT. SHOWERS.
THU NIGHT
W WINDS 20 TO 25 KT. SEAS 4 TO 5 FT. A CHANCE OF
SHOWERS.
FRI AND FRI NIGHT
W WINDS 20 TO 25 KT. SEAS 4 TO 5 FT.
SEAS ARE REPORTED AS SIGNIFICANT WAVE HEIGHT, WHICH IS THE
AVERAGE OF THE HIGHEST THIRD OF THE WAVES. INDIVIDUAL WAVE
HEIGHTS MAY BE MORE THAN TWICE THE SIGNIFICANT WAVE HEIGHT.
ANZ232-280300-
NANTUCKET SOUND-
1004 AM EDT MON APR 27 2026
..SMALL CRAFT ADVISORY IN EFFECT UNTIL 8 PM EDT THIS EVENING
THIS AFTERNOON
NE WINDS 10 TO 15 KT WITH GUSTS UP TO 25 KT.
SEAS 2 TO 3 FT. WAVE DETAIL: N 2 FT AT 3 SECONDS AND S 1 FOOT AT
7 SECONDS.
TONIGHT
NE WINDS AROUND 10 KT WITH GUSTS UP TO 20 KT. SEAS
2 TO 4 FT. WAVE DETAIL: NE 2 FT AT 4 SECONDS AND E 2 FT AT
12 SECONDS.
TUE
NE WINDS 10 TO 15 KT WITH GUSTS UP TO 20 KT. SEAS 2 TO
4 FT. WAVE DETAIL: NE 2 FT AT 4 SECONDS AND NW 2 FT AT 4 SECONDS.
TUE NIGHT
N WINDS 10 TO 15 KT WITH GUSTS UP TO 20 KT. SEAS
2 TO 4 FT. WAVE DETAIL: E 3 FT AT 9 SECONDS AND N 2 FT AT
4 SECONDS.
WED
NE WINDS AROUND 10 KT. SEAS 2 TO 4 FT. WAVE DETAIL: N 2 FT
AT 6 SECONDS AND E 2 FT AT 10 SECONDS.
WED NIGHT
E WINDS 10 TO 15 KT. SEAS 2 TO 4 FT. WAVE DETAIL: E
2 FT AT 5 SECONDS AND E 2 FT AT 10 SECONDS. A CHANCE OF SHOWERS
AFTER MIDNIGHT.
THU AND THU NIGHT
SE WINDS AROUND 15 KT, BECOMING W. SEAS 2 TO
4 FT. SHOWERS.
FRI AND FRI NIGHT
W WINDS 15 TO 20 KT WITH GUSTS UP TO 25 KT.
SEAS 2 TO 4 FT.
SEAS ARE REPORTED AS SIGNIFICANT WAVE HEIGHT, WHICH IS THE
AVERAGE OF THE HIGHEST THIRD OF THE WAVES. INDIVIDUAL WAVE
HEIGHTS MAY BE MORE THAN TWICE THE SIGNIFICANT WAVE HEIGHT.
ANZ233-280300-
VINEYARD SOUND-
1004 AM EDT MON APR 27 2026
THIS AFTERNOON
NE WINDS AROUND 10 KT WITH GUSTS UP TO 20 KT.
SEAS 2 TO 3 FT. WAVE DETAIL: N 1 FOOT AT 3 SECONDS AND S 1 FOOT
AT 7 SECONDS.
TONIGHT
NE WINDS 5 TO 10 KT. SEAS 2 TO 3 FT. WAVE DETAIL: SE
2 FT AT 11 SECONDS AND N 1 FOOT AT 3 SECONDS.
TUE
NE WINDS 10 TO 15 KT WITH GUSTS UP TO 20 KT. SEAS 2 TO
3 FT. WAVE DETAIL: NW 2 FT AT 3 SECONDS AND NE 2 FT AT 3 SECONDS.
TUE NIGHT
NE WINDS 10 TO 15 KT. GUSTS UP TO 20 KT IN THE
EVENING. SEAS 2 TO 3 FT. WAVE DETAIL: NE 2 FT AT 3 SECONDS AND N
2 FT AT 4 SECONDS.
WED
NE WINDS AROUND 10 KT, BECOMING E IN THE AFTERNOON. SEAS
2 TO 3 FT. WAVE DETAIL: S 2 FT AT 8 SECONDS AND N 1 FOOT AT
3 SECONDS.
WED NIGHT
SE WINDS 10 TO 15 KT. SEAS 2 TO 3 FT. WAVE DETAIL: N
1 FOOT AT 2 SECONDS AND E 1 FOOT AT 4 SECONDS. SHOWERS LIKELY
AFTER MIDNIGHT.
THU
SE WINDS 10 TO 15 KT WITH GUSTS UP TO 20 KT. SEAS 2 TO
3 FT. SHOWERS.
THU NIGHT
W WINDS 15 TO 20 KT WITH GUSTS UP TO 25 KT. SEAS
2 TO 3 FT. A CHANCE OF SHOWERS.
FRI AND FRI NIGHT
W WINDS 15 TO 20 KT WITH GUSTS UP TO 25 KT.
SEAS 2 TO 3 FT.
SEAS ARE REPORTED AS SIGNIFICANT WAVE HEIGHT, WHICH IS THE
AVERAGE OF THE HIGHEST THIRD OF THE WAVES. INDIVIDUAL WAVE
HEIGHTS MAY BE MORE THAN TWICE THE SIGNIFICANT WAVE HEIGHT.
ANZ234-280300-
BUZZARDS BAY-
1004 AM EDT MON APR 27 2026
THIS AFTERNOON
NE WINDS AROUND 10 KT WITH GUSTS UP TO 20 KT.
SEAS 2 TO 3 FT. WAVE DETAIL: N 1 FOOT AT 3 SECONDS AND S 1 FOOT
AT 7 SECONDS.
TONIGHT
NE WINDS 5 TO 10 KT. SEAS AROUND 2 FT. WAVE DETAIL: SE
2 FT AT 11 SECONDS AND N 1 FOOT AT 3 SECONDS.
TUE
NE WINDS 5 TO 10 KT, INCREASING TO 10 TO 15 KT IN THE
AFTERNOON. GUSTS UP TO 20 KT. SEAS 2 TO 3 FT. WAVE DETAIL: NW
2 FT AT 3 SECONDS AND NE 2 FT AT 3 SECONDS.
TUE NIGHT
NE WINDS 10 TO 15 KT WITH GUSTS UP TO 20 KT,
BECOMING N 5 TO 10 KT AFTER MIDNIGHT. SEAS AROUND 2 FT. WAVE
DETAIL: N 2 FT AT 4 SECONDS AND S 1 FOOT AT 10 SECONDS.
WED
NE WINDS AROUND 10 KT, BECOMING E IN THE AFTERNOON. SEAS
AROUND 2 FT. WAVE DETAIL: N 1 FOOT AT 3 SECONDS AND S 1 FOOT AT
9 SECONDS.
WED NIGHT
SE WINDS 10 TO 15 KT. SEAS AROUND 2 FT. WAVE DETAIL:
N 1 FOOT AT 2 SECONDS AND E 1 FOOT AT 2 SECONDS. SHOWERS LIKELY
AFTER MIDNIGHT.
THU AND THU NIGHT
SE WINDS 10 TO 15 KT, BECOMING W 15 TO
20 KT. SEAS AROUND 2 FT. SHOWERS.
FRI AND FRI NIGHT
W WINDS 15 TO 20 KT WITH GUSTS UP TO 25 KT.
SEAS 2 TO 3 FT.
SEAS ARE REPORTED AS SIGNIFICANT WAVE HEIGHT, WHICH IS THE
AVERAGE OF THE HIGHEST THIRD OF THE WAVES. INDIVIDUAL WAVE
HEIGHTS MAY BE MORE THAN TWICE THE SIGNIFICANT WAVE HEIGHT.
ANZ235-280300-
RHODE ISLAND SOUND-
1004 AM EDT MON APR 27 2026
THIS AFTERNOON
NE WINDS AROUND 10 KT WITH GUSTS UP TO 20 KT.
SEAS 2 TO 3 FT. WAVE DETAIL: SE 3 FT AT 7 SECONDS AND N 1 FOOT AT
3 SECONDS.
TONIGHT
NE WINDS 5 TO 10 KT. SEAS 2 TO 4 FT. WAVE DETAIL: SE
4 FT AT 9 SECONDS AND NE 2 FT AT 3 SECONDS.
TUE
NE WINDS 10 TO 15 KT WITH GUSTS UP TO 20 KT. SEAS 3 TO
4 FT. WAVE DETAIL: E 4 FT AT 8 SECONDS AND SE 4 FT AT 10 SECONDS.
TUE NIGHT
NE WINDS 10 TO 15 KT. GUSTS UP TO 20 KT IN THE
EVENING. SEAS 2 TO 4 FT. WAVE DETAIL: SE 4 FT AT 10 SECONDS AND N
2 FT AT 4 SECONDS.
WED
NE WINDS AROUND 10 KT, BECOMING E IN THE AFTERNOON. SEAS
2 TO 4 FT. WAVE DETAIL: NE 4 FT AT 10 SECONDS AND SE 3 FT AT
10 SECONDS.
WED NIGHT
SE WINDS 10 TO 15 KT. SEAS 2 TO 4 FT. WAVE DETAIL:
SE 3 FT AT 10 SECONDS AND S 3 FT AT 20 SECONDS. SHOWERS LIKELY
AFTER MIDNIGHT.
THU
SE WINDS 10 TO 15 KT WITH GUSTS UP TO 20 KT. SEAS 2 TO
4 FT. SHOWERS.
THU NIGHT
W WINDS 20 TO 25 KT. SEAS 3 TO 4 FT. A CHANCE OF
SHOWERS.
FRI AND FRI NIGHT
W WINDS 20 TO 25 KT, DIMINISHING TO 15 TO
20 KT. SEAS 2 TO 4 FT.
SEAS ARE REPORTED AS SIGNIFICANT WAVE HEIGHT, WHICH IS THE
AVERAGE OF THE HIGHEST THIRD OF THE WAVES. INDIVIDUAL WAVE
HEIGHTS MAY BE MORE THAN TWICE THE SIGNIFICANT WAVE HEIGHT.
ANZ237-280300-
BLOCK ISLAND SOUND-
1004 AM EDT MON APR 27 2026
THIS AFTERNOON
NE WINDS AROUND 10 KT WITH GUSTS UP TO 20 KT.
SEAS 2 TO 3 FT. WAVE DETAIL: SE 3 FT AT 7 SECONDS AND N 1 FOOT AT
3 SECONDS.
TONIGHT
E WINDS 5 TO 10 KT, BECOMING NE AFTER MIDNIGHT. SEAS
2 TO 4 FT. WAVE DETAIL: SE 3 FT AT 9 SECONDS AND NE 2 FT AT
3 SECONDS.
TUE
NE WINDS 5 TO 10 KT, BECOMING E IN THE AFTERNOON. SEAS
3 TO 4 FT. WAVE DETAIL: E 4 FT AT 9 SECONDS AND NE 2 FT AT
3 SECONDS.
TUE NIGHT
NE WINDS 5 TO 10 KT WITH GUSTS UP TO 20 KT, BECOMING
N AFTER MIDNIGHT. SEAS 3 TO 4 FT. WAVE DETAIL: E 4 FT AT
9 SECONDS AND N 2 FT AT 4 SECONDS.
WED
NE WINDS 5 TO 10 KT, BECOMING E IN THE AFTERNOON. SEAS
3 TO 4 FT. WAVE DETAIL: NE 3 FT AT 9 SECONDS AND E 3 FT AT
9 SECONDS.
WED NIGHT
SE WINDS AROUND 10 KT. SEAS 2 TO 4 FT. WAVE DETAIL:
E 3 FT AT 10 SECONDS AND SE 2 FT AT 5 SECONDS. SHOWERS AFTER
MIDNIGHT.
THU
SE WINDS 10 TO 15 KT. SEAS 2 TO 4 FT. SHOWERS.
THU NIGHT
W WINDS 15 TO 20 KT WITH GUSTS UP TO 25 KT. SEAS
3 TO 4 FT. A CHANCE OF SHOWERS.
FRI AND FRI NIGHT
W WINDS 15 TO 20 KT WITH GUSTS UP TO 25 KT.
SEAS 2 TO 4 FT.
SEAS ARE REPORTED AS SIGNIFICANT WAVE HEIGHT, WHICH IS THE
AVERAGE OF THE HIGHEST THIRD OF THE WAVES. INDIVIDUAL WAVE
HEIGHTS MAY BE MORE THAN TWICE THE SIGNIFICANT WAVE HEIGHT.
ANZ230-280300-
BOSTON HARBOR-
1004 AM EDT MON APR 27 2026
THIS AFTERNOON
E WINDS AROUND 5 KT. WAVES 1 FOOT OR LESS.
TONIGHT
E WINDS AROUND 5 KT. WAVES 1 FOOT OR LESS.
TUE
NE WINDS 5 TO 10 KT. WAVES 1 FOOT OR LESS, THEN AROUND
2 FT IN THE AFTERNOON.
TUE NIGHT
NE WINDS 5 TO 10 KT. WAVES AROUND 2 FT IN THE
EVENING, THEN 1 FOOT OR LESS. AT THE OUTER HARBOR ENTRANCE, WAVES
2 TO 4 FT.
WED
NE WINDS 5 TO 10 KT. WAVES 1 FOOT OR LESS, EXCEPT 2 TO
4 FT AT THE OUTER HARBOR ENTRANCE.
WED NIGHT
E WINDS 10 TO 15 KT. WAVES 1 FOOT OR LESS, THEN 2 TO
3 FT AFTER MIDNIGHT. A CHANCE OF SHOWERS IN THE EVENING, THEN
SHOWERS LIKELY AFTER MIDNIGHT.
THU AND THU NIGHT
E WINDS 10 TO 15 KT, BECOMING N 15 TO 20 KT.
WAVES 2 TO 3 FT. SHOWERS.
FRI AND FRI NIGHT
W WINDS 15 TO 20 KT. WAVES AROUND 2 FT. A
CHANCE OF SHOWERS.
SEAS ARE REPORTED AS SIGNIFICANT WAVE HEIGHT, WHICH IS THE
AVERAGE OF THE HIGHEST THIRD OF THE WAVES. INDIVIDUAL WAVE
HEIGHTS MAY BE MORE THAN TWICE THE SIGNIFICANT WAVE HEIGHT.
ANZ236-280300-
NARRAGANSETT BAY-
1004 AM EDT MON APR 27 2026
THIS AFTERNOON
NE WINDS 5 TO 10 KT WITH GUSTS UP TO 20 KT.
WAVES AROUND 2 FT.
TONIGHT
NE WINDS AROUND 5 KT. WAVES AROUND 2 FT.
TUE
NE WINDS 5 TO 10 KT. WAVES AROUND 2 FT.
TUE NIGHT
NE WINDS 5 TO 10 KT. WAVES AROUND 2 FT.
WED
NE WINDS 5 TO 10 KT, BECOMING E IN THE AFTERNOON. WAVES
AROUND 2 FT.
WED NIGHT
SE WINDS AROUND 10 KT. WAVES AROUND 2 FT. SHOWERS
AFTER MIDNIGHT.
THU
SE WINDS 10 TO 15 KT. WAVES 2 TO 3 FT. SHOWERS.
THU NIGHT
NW WINDS 10 TO 15 KT WITH GUSTS UP TO 20 KT. WAVES
2 TO 3 FT. A CHANCE OF SHOWERS.
FRI AND FRI NIGHT
W WINDS 15 TO 20 KT. WAVES 2 TO 3 FT.
SEAS ARE REPORTED AS SIGNIFICANT WAVE HEIGHT, WHICH IS THE
AVERAGE OF THE HIGHEST THIRD OF THE WAVES. INDIVIDUAL WAVE
HEIGHTS MAY BE MORE THAN TWICE THE SIGNIFICANT WAVE HEIGHT.
ANZ280-280300-
OCEAN WATERS FROM THE MERRIMACK RIVER TO PLYMOUTH FROM 40 TO
60 NM-
1004 AM EDT MON APR 27 2026
THIS AFTERNOON
NE WINDS 5 TO 10 KT. SEAS 2 TO 3 FT. WAVE
DETAIL: SE 2 FT AT 7 SECONDS AND NW 1 FOOT AT 2 SECONDS.
TONIGHT
E WINDS 5 TO 10 KT, INCREASING TO 10 TO 15 KT WITH
GUSTS UP TO 20 KT AFTER MIDNIGHT. SEAS 3 TO 5 FT. WAVE DETAIL: E
5 FT AT 12 SECONDS AND SE 3 FT AT 8 SECONDS. PATCHY FOG AFTER
MIDNIGHT WITH VSBY 1 TO 3 NM.
TUE
NE WINDS 10 TO 15 KT WITH GUSTS UP TO 20 KT. SEAS 5 TO
7 FT. WAVE DETAIL: SE 5 FT AT 8 SECONDS AND S 4 FT AT 8 SECONDS.
PATCHY FOG IN THE MORNING WITH VSBY 1 TO 3 NM.
TUE NIGHT
NE WINDS 10 TO 15 KT WITH GUSTS UP TO 25 KT. SEAS
6 TO 8 FT. WAVE DETAIL: E 7 FT AT 10 SECONDS AND NW 1 FOOT AT
2 SECONDS.
WED AND WED NIGHT
SE WINDS 10 TO 15 KT WITH GUSTS UP TO 25 KT.
SEAS 6 TO 8 FT. WAVE DETAIL: E 7 FT AT 10 SECONDS AND N 1 FOOT AT
2 SECONDS. A CHANCE OF SHOWERS THROUGH THE DAY. A CHANCE OF
SHOWERS AFTER MIDNIGHT.
THU AND THU NIGHT
E WINDS 15 TO 20 KT, BECOMING SE 20 TO
25 KT. GUSTS UP TO 30 KT. SEAS 6 TO 7 FT. WAVE DETAIL: SE 7 FT AT
10 SECONDS AND S 2 FT AT 4 SECONDS. SHOWERS.
FRI
W WINDS 15 TO 20 KT WITH GUSTS UP TO 25 KT. SEAS 5 TO
6 FT. A CHANCE OF SHOWERS.
FRI NIGHT
W WINDS 15 TO 20 KT WITH GUSTS UP TO 25 KT. SEAS
AROUND 5 FT.
SEAS ARE REPORTED AS SIGNIFICANT WAVE HEIGHT, WHICH IS THE
AVERAGE OF THE HIGHEST THIRD OF THE WAVES. INDIVIDUAL WAVE
HEIGHTS MAY BE MORE THAN TWICE THE SIGNIFICANT WAVE HEIGHT.
ANZ281-280300-
OCEAN WATERS FROM PROVINCETOWN TO NANTUCKET FROM 20 TO 60 NM-
1004 AM EDT MON APR 27 2026
THIS AFTERNOON
NE WINDS 10 TO 15 KT WITH GUSTS UP TO 30 KT.
SEAS 4 TO 6 FT. WAVE DETAIL: E 5 FT AT 12 SECONDS AND N 3 FT AT
4 SECONDS.
TONIGHT
NE WINDS 10 TO 15 KT, INCREASING TO 15 TO 20 KT AFTER
MIDNIGHT. GUSTS UP TO 25 KT. SEAS 5 TO 8 FT. WAVE DETAIL: E 7 FT
AT 8 SECONDS AND N 2 FT AT 4 SECONDS.
TUE
NE WINDS 15 TO 20 KT WITH GUSTS UP TO 30 KT. SEAS 6 TO
8 FT, BUILDING TO 7 TO 10 FT IN THE AFTERNOON. WAVE DETAIL: E
7 FT AT 8 SECONDS AND NE 3 FT AT 5 SECONDS, BECOMING E 7 FT AT
9 SECONDS AND N 2 FT AT 4 SECONDS. PATCHY FOG IN THE MORNING WITH
VSBY 1 TO 3 NM.
TUE NIGHT
NE WINDS 15 TO 20 KT, BECOMING N 10 TO 15 KT AFTER
MIDNIGHT. GUSTS UP TO 25 KT. SEAS 8 TO 10 FT. WAVE DETAIL: E 8 FT
AT 10 SECONDS AND N 3 FT AT 5 SECONDS.
WED
NE WINDS 10 TO 15 KT. GUSTS UP TO 20 KT IN THE MORNING.
SEAS 7 TO 8 FT. WAVE DETAIL: E 8 FT AT 10 SECONDS AND NE 3 FT AT
5 SECONDS. A CHANCE OF SHOWERS IN THE MORNING.
WED NIGHT
E WINDS 10 TO 15 KT WITH GUSTS UP TO 20 KT. SEAS
6 TO 7 FT. WAVE DETAIL: E 7 FT AT 9 SECONDS AND E 3 FT AT
5 SECONDS. A CHANCE OF SHOWERS AFTER MIDNIGHT.
THU AND THU NIGHT
SE WINDS 15 TO 20 KT, BECOMING S 20 TO
25 KT. SEAS 6 TO 7 FT. SHOWERS.
FRI AND FRI NIGHT
W WINDS 15 TO 20 KT WITH GUSTS UP TO 25 KT.
SEAS 5 TO 7 FT.
SEAS ARE REPORTED AS SIGNIFICANT WAVE HEIGHT, WHICH IS THE
AVERAGE OF THE HIGHEST THIRD OF THE WAVES. INDIVIDUAL WAVE
HEIGHTS MAY BE MORE THAN TWICE THE SIGNIFICANT WAVE HEIGHT.
ANZ282-280300-
OCEAN WATERS FROM MARTHAS VINEYARD TO NANTUCKET FROM 25 TO 60 NM-
1004 AM EDT MON APR 27 2026
THIS AFTERNOON
NE WINDS 15 TO 20 KT WITH GUSTS UP TO 30 KT.
SEAS 5 TO 7 FT, BUILDING TO 6 TO 9 FT. WAVE DETAIL: E 6 FT AT
8 SECONDS AND NE 3 FT AT 4 SECONDS, BECOMING E 7 FT AT 9 SECONDS
AND N 3 FT AT 4 SECONDS.
TONIGHT
NE WINDS 15 TO 20 KT WITH GUSTS UP TO 30 KT. SEAS 6 TO
9 FT. WAVE DETAIL: E 8 FT AT 9 SECONDS AND N 3 FT AT 4 SECONDS.
TUE
N WINDS 15 TO 20 KT WITH GUSTS UP TO 25 KT. SEAS 7 TO
9 FT. WAVE DETAIL: E 8 FT AT 9 SECONDS AND N 4 FT AT 6 SECONDS.
TUE NIGHT
N WINDS 15 TO 20 KT WITH GUSTS UP TO 25 KT. SEAS
7 TO 9 FT. WAVE DETAIL: E 7 FT AT 9 SECONDS AND N 3 FT AT
4 SECONDS.
WED
NE WINDS 10 TO 15 KT. GUSTS UP TO 20 KT IN THE MORNING.
SEAS 6 TO 8 FT. WAVE DETAIL: E 7 FT AT 10 SECONDS AND N 3 FT AT
5 SECONDS.
WED NIGHT
E WINDS 10 TO 15 KT. SEAS 6 TO 7 FT. WAVE DETAIL: E
6 FT AT 9 SECONDS AND NE 2 FT AT 5 SECONDS. A CHANCE OF SHOWERS
AFTER MIDNIGHT.
THU
SE WINDS AROUND 15 KT WITH GUSTS UP TO 20 KT. SEAS AROUND
6 FT. SHOWERS.
THU NIGHT
W WINDS 15 TO 20 KT WITH GUSTS UP TO 25 KT. SEAS
6 TO 7 FT. A CHANCE OF SHOWERS.
FRI AND FRI NIGHT
W WINDS 20 TO 25 KT. SEAS 5 TO 7 FT.
SEAS ARE REPORTED AS SIGNIFICANT WAVE HEIGHT, WHICH IS THE
AVERAGE OF THE HIGHEST THIRD OF THE WAVES. INDIVIDUAL WAVE
HEIGHTS MAY BE MORE THAN TWICE THE SIGNIFICANT WAVE HEIGHT.
ANZ283-280300-
OCEAN WATERS FROM MONTAUK NY TO MARTHAS VINEYARD FROM 25 TO 60 NM-
1004 AM EDT MON APR 27 2026
THIS AFTERNOON
NE WINDS 10 TO 15 KT WITH GUSTS UP TO 30 KT.
SEAS 5 TO 7 FT. WAVE DETAIL: E 6 FT AT 8 SECONDS AND N 3 FT AT
4 SECONDS.
TONIGHT
NE WINDS 10 TO 15 KT WITH GUSTS UP TO 25 KT. SEAS 5 TO
8 FT. WAVE DETAIL: E 7 FT AT 10 SECONDS AND NE 3 FT AT 4 SECONDS.
TUE
NE WINDS 10 TO 15 KT WITH GUSTS UP TO 25 KT. SEAS 6 TO
8 FT. WAVE DETAIL: E 7 FT AT 10 SECONDS AND N 4 FT AT 5 SECONDS.
TUE NIGHT
N WINDS 10 TO 15 KT WITH GUSTS UP TO 25 KT. SEAS
6 TO 7 FT. WAVE DETAIL: E 6 FT AT 10 SECONDS AND N 3 FT AT
5 SECONDS.
WED
NE WINDS 10 TO 15 KT. GUSTS UP TO 20 KT IN THE MORNING.
SEAS 5 TO 7 FT. WAVE DETAIL: E 6 FT AT 10 SECONDS AND N 2 FT AT
4 SECONDS.
WED NIGHT
SE WINDS 10 TO 15 KT. SEAS 5 TO 6 FT. WAVE DETAIL: E
5 FT AT 9 SECONDS AND SE 2 FT AT 6 SECONDS. SHOWERS LIKELY AFTER
MIDNIGHT.
THU
SE WINDS AROUND 15 KT WITH GUSTS UP TO 20 KT. SEAS 5 TO
6 FT. SHOWERS.
THU NIGHT
W WINDS 20 TO 25 KT. SEAS AROUND 6 FT. A CHANCE OF
SHOWERS.
FRI
W WINDS 20 TO 25 KT WITH GUSTS UP TO 30 KT. SEAS 5 TO
7 FT.
FRI NIGHT
W WINDS 20 TO 25 KT. SEAS 4 TO 6 FT.
SEAS ARE REPORTED AS SIGNIFICANT WAVE HEIGHT, WHICH IS THE
AVERAGE OF THE HIGHEST THIRD OF THE WAVES. INDIVIDUAL WAVE
HEIGHTS MAY BE MORE THAN TWICE THE SIGNIFICANT WAVE HEIGHT.
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